A videogamer who plays games to unlock achievements on a gaming service, such as Microsoft Studios' Xbox Live, Sony Computer Entertainment's PlayStation Network (trophies), and Valve Software's Steam. Achievement hunters often have a tendency to be completionists.

The term is named after the popular Rooster Teeth Productions division called Achievement Hunter, which started out as website for achievement guides before becoming a well-known Let's Play group.

Achievement Hunter is a video gaming website created by Jack Pattillo and Geoff Ramsey of Rooster Teeth Productions. It is also a division of Rooster Teeth. The series they make include: Lets play's, Lets Play Minecraft, Fails of the Week, Rage Quit, GO, Achievement H.U.N.T, AHWU, and many others. The people that currently work for Achievement Hunter are Geoff Ramsey, Jack Pattillo, Gavin Free, Ray Narvaez Jr, Michael "Rage Quit" Jones, Ryan Haywood, Lindsay Tuggey, and Caleb Denecour. The people that work here also work for Rooster Teeth.

A collection of gibbering voices who play video games on YouTube while plotting mischief and murder against each other, those two concepts often being synonymous. The second greatest product of alcoholism after the American Civil War and proof you can earn money playing video games. A division of Rooster Teeth, the Red vs Blue guys.

I walked past the Achievement Hunter office earlier and all I could hear is cursing broken up by a Britishgirl squealing.